Experimental Testing of PV Module Performance

This study compares the manufacturer\u27s technical data of several PV modules with real measured outdoor technical data. The irradiance effect on several PV modules is examined by the changing a tilt angle and comparing different meteorological situations of sky clearness (clouds) on the modules mounted outdoor and exposed to Sun. Also, the influence of temperature and dust on the performance of a PV panel is under research using measurement methods described in the paper. The measured current and voltage data at the clean surface of the PV module correspond to the declared data of the PV module manufacturer, and in the case of fouling of the module surface with dust, a power drop of 7.39% was measured

Cost-effectiveness analysis of the application of a PV power plant on a family house with a consumption of 5000 kWh of electricity per year

U uvodnom dijelu rada opisan je fotonapon od povijesnog razvoja do principa rada fotonaponskih ćelija te komponenti FN elektrana spojenih u elektroenergetsku mrežu (on-grid sustav). Glavni dio rada odnosi se na projektiranje FN sustava za kuću potrošnje 5000 kWh električne energije godišnje što uključuje određivanje potrebnog broja FN modula, mrežnog izmjenjivača i ostale opreme te način montaže FN sustava. Također je izvršena analiza smještaja i usmjerenosti modula, analiza troškova opreme u svrhu određivanja iznosa troška ukupne investicije te izračun vremena povrata sredstava.In the introductory part of the final paper is short description of the photovoltaic from the historical development to the principle of operation of photovoltaic cells and the components of the power grid (on grid system). The main part of the final paper relates to the design of PV systems for the house consuming 5000 kWh of electricity per year, which includes determining the required number of PV modules, inverter and other equipment required for installation of PV systems. An analysis of the location and orientation of modules, analysis of equipment costs to determine the total investment and calculate the time required to return funds were also performe

Cost-Benefit Analysis of Small-Scale Rooftop PV Systems: The Case of Dragotin, Croatia

A large drop in prices of photovoltaic (PV) equipment, an increase in electricity prices, and increasing environmental pressure to use renewable energy sources that pollute the environment significantly less than the use of fossil fuels have led to a large increase in installed roof PV capacity in many parts of the world. In this context, this paper aims to analyze the cost-effectiveness of installing PV systems in the rural continental part of Croatia on existing family houses. A typical example is a house in Dragotin, Croatia with an annual consumption of 4211.70 kWh of electricity on which PV panels are placed facing south under the optimal slope. The calculation of the optimal size of a PV power plant with a capacity of 3.6 kW, without battery energy storage, was performed by the Homer program. The daily load curve was obtained by measuring the electricity consumption at the facility every hour during a characteristic day in the month of June. As most of the activities are related to electricity consumption, repeating during most days of the year, and taking into account seasonal activities, daily load curves were made for a characteristic day in each month of the year. Taking into account the insolation for the specified location, using the Internet platform Solargis Prospect, hourly data on the electricity production of selected PV modules for a characteristic day in each month were obtained. Based on the previous data, the electricity injected into the grid and taken from the grid was calculated. Taking into account the current tariffs for the sale and purchase of electricity, investment prices, and maintenance of equipment, the analysis shows that such a PV system can pay off in 10.5 years without government incentives